public class Exercise1_4 {
  public static void main(String[] args) {
    System.out.println("a      a^2    a^3");  
    System.out.println("1      1      1");   
    System.out.println("2      4      8");
    System.out.println("3      9      27");
    System.out.println("4      16     64");
  }
}